Guild Wars 2

while playing GW2 my computer is constantly and it seems at random fully crashing first the video cuts off then the sound screws up my mouse it still on and so is the computer but my computer comes to a dead stop and I have to restart.

my BCCode is 117

12gb of ram

EVGA GeForce GTX 970 Super Clocked ACX 2.0 4GB

I7-2600k cpu @ 3.4 GHZ

I had this issue with ffxiv and people said it might be a voltage issue can msi afterburner fix this?